I like to use paper to make models of different types of technical units (especially war machines). So this contest is a real challenge for me. My new object is absolutely civil facility, but it has caterpillars ;-)

And we don't need any glue in this project.

Step 1: Tools and Materials

cardboard sheets (4 mm width);
ruler;
pencil;
paper knife;
awl;
needle file (small rasp);
scissors;
PC, printer and 5 A4 sheets to print base drawings;
old wooden board (~ A3 size) as a work plane for cutting operations.

Step 2: Printing Base Drawings

It is possible to draw all sketches we need directly on cardboard sheets. But more convenient way (as I think) is to print all drawings on plain paper and then transfer it to cardboard using awl.

So you need to have 5 drawing: Bumper_Pipe_Trucks, Cabin, Engine, Frame, Wheels_Axes.

Download links for drawings (in pdf): variant 1(google drive), variant 2 (yandex drive)

Tractor.zip
Download

Step 3: Transferring Drawings to a Cardboard

Use the next sequence to transfer all the drawings on cardboard : 1) put the cardboard on the old wooden board; 2) put the drawing on cardboard; 3) make holes in key vertexes through the paper using awl; 4) remove the paper drawing from the cardboard; 5) connect holes on the cardboard using ruler and pencil.